I could discolor you could discolor he could discolor we could discolor you could discolor they could discolor
Forma com V-ing
I could be discoloring you could be discoloring he could be discoloring we could be discoloring you could be discoloring they could be discoloring
Perfeito
I could have discolored you could have discolored he could have discolored we could have discolored you could have discolored they could have discolored
Perfeito com V-ing
I could have been discoloring you could have been discoloring he could have been discoloring we could have been discoloring you could have been discoloring they could have been discoloring
Negação
Forma simple
I could not discolor you could not discolor he could not discolor we could not discolor you could not discolor they could not discolor
Forma com V-ing
I could not be discoloring you could not be discoloring he could not be discoloring we could not be discoloring you could not be discoloring they could not be discoloring
Perfeito
I could not have discolored you could not have discolored he could not have discolored we could not have discolored you could not have discolored they could not have discolored
Perfeito com V-ing
I could not have been discoloring you could not have been discoloring he could not have been discoloring we could not have been discoloring you could not have been discoloring they could not have been discoloring
Forma interrogativa
Forma simple
could I discolor? could you discolor? could he discolor? could we discolor? could you discolor? could they discolor?
Forma com V-ing
could I be discoloring? could you be discoloring? could he be discoloring? could we be discoloring? could you be discoloring? could they be discoloring?
Perfeito
could I have discolored? could you have discolored? could he have discolored? could we have discolored? could you have discolored? could they have discolored?
Perfeito com V-ing
could I have been discoloring? could you have been discoloring? could he have been discoloring? could we have been discoloring? could you have been discoloring? could they have been discoloring?
Forma interro-Negação
Forma simple
could I not discolor? could you not discolor? could he not discolor? could we not discolor? could you not discolor? could they not discolor?
Forma com V-ing
could I not be discoloring? could you not be discoloring? could he not be discoloring? could we not be discoloring? could you not be discoloring? could they not be discoloring?
Perfeito
could I not have discolored? could you not have discolored? could he not have discolored? could we not have discolored? could you not have discolored? could they not have discolored?
Perfeito com V-ing
could I not have been discoloring? could you not have been discoloring? could he not have been discoloring? could we not have been discoloring? could you not have been discoloring? could they not have been discoloring?